SCRYPTmail is described as 'is true end-to-end encrypted email service. Email and meta data, i.e sender / recipient are encrypted when you communicate within scryptmail domain' and is an website in the Security & Privacy category. There are more than 25 alternatives to SCRYPTmail, not only websites but also apps for a variety of platforms, including Linux, iPhone, Mac and Windows. The best alternative is ProtonMail, which is both free and Open Source. Other great sites and apps similar to SCRYPTmail are Tutanota (Freemium, Open Source), Posteo (Paid, Open Source), mailbox.org (Paid) and Mailfence (Freemium).
ShazzleMail is the first privacy-protective and surveillance-resistant secure email service. ShazzleMail doesn’t travel the web, but delivers mail directly from your smartphone. No server copies, no open access to NSA, and no big business data mining.
Hushmail is a commercial email service focusing on security with features such as industry-standard OpenPGP encryption and two-step verification. All communications also use a secure SSL/TLS connection.
Fripost – the Free Email Association. Fripost organize the people who want an alternative to "free" e-mail services where you are constantly under surveillance and personal data is handed over to third parties.